mirror of
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369 lines
15 KiB
PHP
369 lines
15 KiB
PHP
<?php
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// +----------------------------------------------------------------------+
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// | PHP versions 4 and 5 |
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// +----------------------------------------------------------------------+
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// | Copyright (c) 1998-2006 Manuel Lemos, Tomas V.V.Cox, |
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// | Stig. S. Bakken, Lukas Smith |
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// | All rights reserved. |
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// +----------------------------------------------------------------------+
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// | MDB2 is a merge of PEAR DB and Metabases that provides a unified DB |
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// | API as well as database abstraction for PHP applications. |
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// | This LICENSE is in the BSD license style. |
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// | |
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// | Redistribution and use in source and binary forms, with or without |
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// | modification, are permitted provided that the following conditions |
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// | are met: |
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// | |
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// | Redistributions of source code must retain the above copyright |
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// | notice, this list of conditions and the following disclaimer. |
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// | |
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// | Redistributions in binary form must reproduce the above copyright |
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// | notice, this list of conditions and the following disclaimer in the |
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// | documentation and/or other materials provided with the distribution. |
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// | |
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// | Neither the name of Manuel Lemos, Tomas V.V.Cox, Stig. S. Bakken, |
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// | Lukas Smith nor the names of his contributors may be used to endorse |
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// | or promote products derived from this software without specific prior|
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// | written permission. |
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// | |
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// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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// | FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
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// | REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
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// | INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
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// | BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS|
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// | OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
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// | AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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// | LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY|
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// | WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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// | POSSIBILITY OF SUCH DAMAGE. |
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// +----------------------------------------------------------------------+
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// | Author: Lukas Smith <smith@pooteeweet.org> |
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// +----------------------------------------------------------------------+
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//
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// $Id$
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//
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require_once 'MDB2/Driver/Reverse/Common.php';
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/**
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* MDB2 MySQL driver for the schema reverse engineering module
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*
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* @package MDB2
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* @category Database
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* @author Lukas Smith <smith@pooteeweet.org>
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*/
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class MDB2_Driver_Reverse_mysql extends MDB2_Driver_Reverse_Common
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{
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// {{{ getTableFieldDefinition()
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/**
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* Get the stucture of a field into an array
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*
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* @param string $table name of table that should be used in method
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* @param string $field_name name of field that should be used in method
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* @return mixed data array on success, a MDB2 error on failure
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* @access public
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*/
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function getTableFieldDefinition($table, $field_name)
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{
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$db =& $this->getDBInstance();
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if (PEAR::isError($db)) {
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return $db;
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}
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$result = $db->loadModule('Datatype', null, true);
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if (PEAR::isError($result)) {
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return $result;
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}
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$table = $db->quoteIdentifier($table, true);
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$query = "SHOW COLUMNS FROM $table LIKE ".$db->quote($field_name);
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$columns = $db->queryAll($query, null, MDB2_FETCHMODE_ASSOC);
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if (PEAR::isError($columns)) {
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return $columns;
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}
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foreach ($columns as $column) {
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$column = array_change_key_case($column, CASE_LOWER);
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$column['name'] = $column['field'];
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unset($column['field']);
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if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
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if ($db->options['field_case'] == CASE_LOWER) {
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$column['name'] = strtolower($column['name']);
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} else {
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$column['name'] = strtoupper($column['name']);
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}
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} else {
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$column = array_change_key_case($column, $db->options['field_case']);
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}
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if ($field_name == $column['name']) {
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list($types, $length, $unsigned, $fixed) = $db->datatype->mapNativeDatatype($column);
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$notnull = false;
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if (empty($column['null']) || $column['null'] !== 'YES') {
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$notnull = true;
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}
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$default = false;
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if (array_key_exists('default', $column)) {
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$default = $column['default'];
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if (is_null($default) && $notnull) {
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$default = '';
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}
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}
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$autoincrement = false;
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if (!empty($column['extra']) && $column['extra'] == 'auto_increment') {
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$autoincrement = true;
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}
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$definition[0] = array(
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'notnull' => $notnull,
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'nativetype' => preg_replace('/^([a-z]+)[^a-z].*/i', '\\1', $column['type'])
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);
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if ($length > 0) {
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$definition[0]['length'] = $length;
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}
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if (!is_null($unsigned)) {
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$definition[0]['unsigned'] = $unsigned;
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}
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if (!is_null($fixed)) {
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$definition[0]['fixed'] = $fixed;
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}
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if ($default !== false) {
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$definition[0]['default'] = $default;
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}
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if ($autoincrement !== false) {
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$definition[0]['autoincrement'] = $autoincrement;
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}
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foreach ($types as $key => $type) {
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$definition[$key] = $definition[0];
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if ($type == 'clob' || $type == 'blob') {
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unset($definition[$key]['default']);
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}
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$definition[$key]['type'] = $type;
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$definition[$key]['mdb2type'] = $type;
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}
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return $definition;
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}
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}
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return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
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'it was not specified an existing table column', __FUNCTION__);
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}
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// }}}
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// {{{ getTableIndexDefinition()
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/**
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* Get the stucture of an index into an array
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*
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* @param string $table name of table that should be used in method
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* @param string $index_name name of index that should be used in method
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* @return mixed data array on success, a MDB2 error on failure
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* @access public
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*/
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function getTableIndexDefinition($table, $index_name)
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{
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$db =& $this->getDBInstance();
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if (PEAR::isError($db)) {
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return $db;
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}
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$index_name = $db->getIndexName($index_name);
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$table = $db->quoteIdentifier($table, true);
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$query = "SHOW INDEX FROM $table /*!50002 WHERE Key_name = ".$db->quote($index_name)." */";
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$result = $db->query($query);
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if (PEAR::isError($result)) {
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return $result;
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}
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$definition = array();
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while (is_array($row = $result->fetchRow(MDB2_FETCHMODE_ASSOC))) {
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$row = array_change_key_case($row, CASE_LOWER);
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$key_name = $row['key_name'];
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if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
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if ($db->options['field_case'] == CASE_LOWER) {
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$key_name = strtolower($key_name);
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} else {
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$key_name = strtoupper($key_name);
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}
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}
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if ($index_name == $key_name) {
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if (!$row['non_unique']) {
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return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
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'it was not specified an existing table index', __FUNCTION__);
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}
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$column_name = $row['column_name'];
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if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
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if ($db->options['field_case'] == CASE_LOWER) {
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$column_name = strtolower($column_name);
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} else {
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$column_name = strtoupper($column_name);
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}
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}
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$definition['fields'][$column_name] = array();
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if (!empty($row['collation'])) {
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$definition['fields'][$column_name]['sorting'] = ($row['collation'] == 'A'
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? 'ascending' : 'descending');
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}
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}
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}
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$result->free();
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if (empty($definition['fields'])) {
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return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
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'it was not specified an existing table index', __FUNCTION__);
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}
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return $definition;
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}
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// }}}
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// {{{ getTableConstraintDefinition()
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/**
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* Get the stucture of a constraint into an array
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*
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* @param string $table name of table that should be used in method
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* @param string $index_name name of index that should be used in method
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* @return mixed data array on success, a MDB2 error on failure
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* @access public
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*/
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function getTableConstraintDefinition($table, $index_name)
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{
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$db =& $this->getDBInstance();
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if (PEAR::isError($db)) {
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return $db;
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}
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if (strtolower($index_name) != 'primary') {
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$index_name = $db->getIndexName($index_name);
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}
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$table = $db->quoteIdentifier($table, true);
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$query = "SHOW INDEX FROM $table /*!50002 WHERE Key_name = ".$db->quote($index_name)." */";
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$result = $db->query($query);
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if (PEAR::isError($result)) {
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return $result;
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}
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$definition = array();
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while (is_array($row = $result->fetchRow(MDB2_FETCHMODE_ASSOC))) {
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$row = array_change_key_case($row, CASE_LOWER);
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$key_name = $row['key_name'];
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if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
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if ($db->options['field_case'] == CASE_LOWER) {
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$key_name = strtolower($key_name);
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} else {
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$key_name = strtoupper($key_name);
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}
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}
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if ($index_name == $key_name) {
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if ($row['non_unique']) {
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return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
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'it was not specified an existing table constraint', __FUNCTION__);
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}
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if ($row['key_name'] == 'PRIMARY') {
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$definition['primary'] = true;
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} else {
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$definition['unique'] = true;
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}
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$column_name = $row['column_name'];
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if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
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if ($db->options['field_case'] == CASE_LOWER) {
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$column_name = strtolower($column_name);
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} else {
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$column_name = strtoupper($column_name);
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}
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}
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$definition['fields'][$column_name] = array();
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if (!empty($row['collation'])) {
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$definition['fields'][$column_name]['sorting'] = ($row['collation'] == 'A'
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? 'ascending' : 'descending');
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}
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}
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}
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$result->free();
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if (empty($definition['fields'])) {
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return $db->raiseError(MDB2_ERROR_NOT_FOUND, null, null,
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'it was not specified an existing table constraint', __FUNCTION__);
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}
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return $definition;
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}
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// }}}
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// {{{ tableInfo()
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/**
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* Returns information about a table or a result set
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*
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* @param object|string $result MDB2_result object from a query or a
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* string containing the name of a table.
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* While this also accepts a query result
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* resource identifier, this behavior is
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* deprecated.
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* @param int $mode a valid tableInfo mode
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*
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* @return array an associative array with the information requested.
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* A MDB2_Error object on failure.
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*
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* @see MDB2_Driver_Common::setOption()
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*/
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function tableInfo($result, $mode = null)
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{
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if (is_string($result)) {
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return parent::tableInfo($result, $mode);
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}
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$db =& $this->getDBInstance();
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if (PEAR::isError($db)) {
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return $db;
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}
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$resource = MDB2::isResultCommon($result) ? $result->getResource() : $result;
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if (!is_resource($resource)) {
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return $db->raiseError(MDB2_ERROR_NEED_MORE_DATA, null, null,
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'Could not generate result resource', __FUNCTION__);
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}
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if ($db->options['portability'] & MDB2_PORTABILITY_FIX_CASE) {
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if ($db->options['field_case'] == CASE_LOWER) {
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$case_func = 'strtolower';
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} else {
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$case_func = 'strtoupper';
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}
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} else {
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$case_func = 'strval';
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}
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$count = @mysql_num_fields($resource);
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$res = array();
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if ($mode) {
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$res['num_fields'] = $count;
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}
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$db->loadModule('Datatype', null, true);
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for ($i = 0; $i < $count; $i++) {
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$res[$i] = array(
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'table' => $case_func(@mysql_field_table($resource, $i)),
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'name' => $case_func(@mysql_field_name($resource, $i)),
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'type' => @mysql_field_type($resource, $i),
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'length' => @mysql_field_len($resource, $i),
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'flags' => @mysql_field_flags($resource, $i),
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);
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if ($res[$i]['type'] == 'string') {
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$res[$i]['type'] = 'char';
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} elseif ($res[$i]['type'] == 'unknown') {
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$res[$i]['type'] = 'decimal';
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}
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$mdb2type_info = $db->datatype->mapNativeDatatype($res[$i]);
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if (PEAR::isError($mdb2type_info)) {
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return $mdb2type_info;
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}
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$res[$i]['mdb2type'] = $mdb2type_info[0][0];
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if ($mode & MDB2_TABLEINFO_ORDER) {
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$res['order'][$res[$i]['name']] = $i;
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}
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if ($mode & MDB2_TABLEINFO_ORDERTABLE) {
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$res['ordertable'][$res[$i]['table']][$res[$i]['name']] = $i;
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}
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}
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return $res;
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}
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}
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?>
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